Catalogue of an Exhibition of Books, Prints, & Manuscripts from the Shelves of The Library Company of Philadelphia & The Historical Society of Pennsylvania, April 17 to July 17, 1969. The exhibition is intended to show that the collections of these two institutions in this field are huge, comprehensive, & choice. They have one of the largest & finest accumulations of material which exists on the American Negro up to 1900. The 238 items selected for this exhibition emphasize the contributions of Negroes to their own history. Black & white illustrations.